The Gateway A/V module scans all email for worms and viruses. It can be used in a number of configurations: 1) As a transparent gateway that scans email destined for your primary mail server; 2) as the MX server that relays to your primary mail server; or 3) as your primary mail server (which is postfix under the covers). Data file updates are checked for every few hours and automatically installed when new data files are available. The module can be configured to quarantine infected email, notify sender and receiver, and/or simply block email and notify an administrator.